In May, San Isidro typically sees daytime highs of 22.7°C and overnight lows around 16.1°C. Compared to the annual average high of 22.9°C, May runs -0.2°C.
May in San Isidro averages a daytime high of 22.7°C and an overnight low of 16.1°C.
May runs -0.2°C compared to San Isidro's annual average high of 22.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 22.7°C and cooler evenings around 16.1°C.